Pipe-wrench.



No. 747,013. PATENTED DEG..15.'1903.

' A. W. SNYDER.

PIPE WRENCH.

APPLICATION FILED snr'r. 19, 1903.

H0 MODEL.

In S S I I 7 6 19 ll WITNESSES.- INVENTOR W WW S' '73.-

lTlED Frames Patented December 15., 1903.

PATENT vrrrcn.

ALBERT W. SNYDER, OF FARMINGTON, WEST VIRGINIA, ASSIGNOR OF ONE-FOURTH TO GAYLORD S. BASNETT, OF AMOS, WEST VIRGINIA.-

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 747,013, dated December 15, 1903- Application filed September 19, 1908. Serial N0.l73|836. (No model.)

T0 on whom it may concern.-

Be it known that I, ALBERT W. SNYDER, a citizen of the United States, residing at Farmington, in the county of Marion and State of West Virginia, have invented new and useful Improvements in Pipe-W'renches; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to improvements in pipe-wrenches, and has for its object to provide a simple and inexpensive and efficient one of great strength. and durability capable of ready adjustment to engage rods and pipes of different dimensions and adapted to be oscillated for effecting the rotation of a pipe, rod, or the like for screwing or unscrewing the same.

A further object of the invention is to provide a Wrench of this character which may be readily set so that its oscillation will rotate a pipe or rod in the desired direction.

With these and other objects in view the invention consists in the construction and novel arrangement of parts hereinafter described and shown, and particularly pointed out in the appended claims.

In the drawings forming part of this specification, and in which like numerals of reference designate corresponding parts, Figure 1 is a perspective view of a pipe-wrench constructed in accordance with this invention. Fig. 2 is a longitudinal sectional view of the same. Fig. 3 is a longitudinal sectional view taken at right angles to Fig. 2. Fig. 4. is a detail perspective view of the adjustable jaw and its pivoted yoke.

Referring to the drawings, 1 designates a shank or bar provided at one end with a handle 2 and having a circular head 3 at its other end, forming a bearing for a ratchet-wheel or member at, which is rotated by the oscillation of the shank or bar and which is provided with means, hereinafter described, for engaging a pipe or rod, whereby the latter will be continuously rotated to screw or unscrew it when the shank or bar is oscillated. The circular head is provided at the outer end of the Wrench with an opening 5 for the introduction of the pipe or rod, and it has an interiorly-arranged annular groove 6 for the reception of lugs or teeth 7 of the rotary member or ratchet-wheel. These teeth or lugs, which form opposite shoulders, perform the double function of retaining the rotary member or wheel within the head of the wrench and of cooperating with a pair of dogs or pawls 8, which are pivotally mounted within slots or openings 9 of the shank or bar. The

' pawls or dogs, which are mounted on pins 10 or other suitable fastening devices, are engaged by a spring 11, and they are provided with engaging portions 12, adapted to engage the teeth or lugs of the rotary member or wheel when the shank or bar is oscillated in one direction and to ride over the same when the shank or bar is swung in the opposite direction. Either of the pawls or dogs may be swung outof engagement with the rotary member or wheel, and it will be retained in such position by the spring, as illustrated in Fig. 2 of the drawings. Any form of spring may be employed, and the head of the shank or bar is provided with a removable plate or section 13, having an extension 14, which overlaps the adjacent portion of the shank or bar, as shown. The outer portions of the pawls or dogs project beyond the shank or bar and are adapted to be readily operated.

The rotary member or wheel is vprovided with an opening 15 for the reception of the pipe or rod, and this opening extends inward from the periphery of the rotary member or wheel and then transversely thereof,as shown, and that portion at the outer side of the opening is provided with teeth or. serrations to form a fixed jaw 16 for engaging a pipe or rod. The fixed jaw cooperates with an adjustable jaw 17, which is guided in a. recess 0 to engage two of the teeth or serrations of the slot 24.

A coiled spring 26, which is arranged in the recess or extension of the pipereceiving opening of the rotary member or wheel, is connected with the latter and with the adjustable jaw and is adapted to draw the same inward to facilitate the adjustment of the jaw; but it may be arranged for forcing the adjustable jaw outward from the inner end of the recess toward the fixed jaw, if desired. The spring also cooperates with the yoke of the adjustable jaw to retain the former in engagement with the teeth or serrations of the rotary member or wheel, and by this arrangement there is no liability of the adjustable jaw slipping, and thereby releasing a pipe or rod. The adjustable jaw is provided at its engaging face, which is arranged at an angle to that of the fixed jaw, with serrations or teeth, and a pipe or rod is firmly gripped between the two jaws.

It will be seen that the pipe-wrench is exceedingly simple and inexpensive in construction, that it is adapted to be readily engaged with a pipe or rod when the opening of the rotary member or wheel is brought into register with the opening of the head, and that a pipe or rod may be readily rotated in either direction by simply oscillating the shank or bar.

What I claim is- 1. The combination of a shank or bar having a bearing, a rotary member or wheel having a fixed jaw provided with serrations, an adjustable jaw mounted on the rotary member or wheel and cooperating with the fixed jaw, means comprising a spring and a pivoted device for holding the adjustable jaw, and means carried by the shank or bar, for rotating the said member or wheel, substantially as described.

2. The combination of a shank or bar having a bearing, a rotary member or wheel provided with a fixed jaw, an adjustable jaw carried by the rotary member or wheel, a pivoted yoke connected with the adjustable jaw and engaging the rotary member or wheel, and a spring connected with the adjustable jaw for holding the yoke in engagement, substantially as described.

3. The combination of ashank or bar having a bearing, a rotary member or wheel having an opening extending inward from its periphery to form a fixed jaw, said member or wheel beingalso provided with a slot,and having serrations or teeth therein, an, adjustable jaw carried by the rotary member or wheel, a pivoted yoke connected with the adjustable jaw, and operating in the slot for engaging theserrations or teeth, and a spring for holding the yoke in such engagement, substantially as described.

In testimony whereof I have hereto affixed my signature in the presence of two witnesses.

ALBERT W. SNYDER.

Witnesses: HUGH DAVIS,

HYDE O. SNYDER. 

